Problem 13.12 - Problem 13.12 Given: Air flow in a passage...

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Problem 13.12 [Difficulty: 3] Given: Air flow in a passage Find: Speed and area downstream; Sketch flow passage Solution: Basic equations: T 0 T 1 k1 2 M 2 ck R T A A crit 1 M 1 2 M 2 2 2k1 () Given or available data T 1 32 460 R p 1 25 psi M 1 1.75 T 2 225 460 R k 1.4 R air 53.33 ft lbf lbm R D 1 3f t A 1 π D 1 2 4 A 1 7.07 ft 2 Hence T 0 T 1 1 2 M 1 2 T 0 793 R T 0 334 °F For isentropic flow stagnation conditions are constant. Hence M 2 2 T 0 T 2 1 M 2 0.889 We also have c 2 kR air T 2 c 2 1283 ft s Hence V 2 M 2 c 2 V 2 1141
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This note was uploaded on 01/20/2012 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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